5. Conclusions
(1) The three-dimensional finite element numerical simulation method has a good quality to portray the geologic body, and can be used to simulate and analyze complex quaternary loose sediments with great thickness and the engineering structures of dewatering in deep foundation pit, and can serve as the basic theory of optimization design of engineering structures of dewatering in deep foundation pit in such areas.
(2) Improving element conduction matrix adjustment method has been used to deal with the free-water table boundary condition, which could improve the stability of the model.
(3) If it can deal well with the relation between the diaphragm wall of basic pit maintenance and the location of the filters of the pump wells, the foundation pit dewatering method can be used to meet the demand of foundation pit dewatering, and can effectively control land subsidence around the foundation pit in the area of complex quaternary loose sediments with great thickness.
References
1 TANG Ye-qing, LI Qi-min and CUI Jiang-yuan.Accidental analysis and treatment of foundation pit project [M]. Beijing: China Architecture and Building Press, 1999 (in Chinese).
2 CARTER J. P. and SMALL J. C. Surface subsidence and drawdown of the water table due to pumping [J]. Geotechnique, 1994, 44(3): 381-396.
3 AKAI K.,and NISHIGAKI M. Finite element analysis of three-dimensional flows in saturated-unsaturated soils [C]. Proc. 3rdInternational Conference. on Numerical Methods in Geomechanics. Aachen, Germany, 1997, 732-739.
4 MAO Chang-xi, DUAN Xiang-bao and LI Zu-yi et al.Numerical computation in seepage flow and programs application[M]. Nanjing: Hohai University Press, 1999, 3-40 (in Chinese).
5 SU Bao-yu, GUO Hong-xing and Research of the cut-off negative pressure to solve for unsteady seepage flow [J]. J. Geotechnical Eng., 1999,21(6): 711-714 (in Chinese).
6 ZHANG Qian-fei, WANG Yan-ming. Research on improved cut-off negative pressure method for unsteady seepage flow with free surface [J]. Journal of Hydrodynamics, Ser. B, 2005, 17(5): 521-531.
7 BARDET Jean-Pierre, TOBITA Tetsuo. A practical method for solving free-surface seepage problems[J].Computers and Geotechnics, 2002.29: 451-475.
8 WU Yong-xia. Three-dimensional numerical simulation research of deep foundation pit dewatering incomposite aquifer [M].Nanjing: Hohai UniversityPress, 2006 (in Chinese).
9 LI Yi-ming, ZHOU Feng-yan. Solution to a class of boundary value problem of three dimensional partial differential equation [J]. Journal of Jiangsu University (Natural Science Edition), 2003, 24(3):17-19 (in Chinese).
10 ZHANG Pei-wen, LIU De-fu and SONG Yu-pu.Coupling simulation of surface flow and subsurfaceflow over porous media [J]. Journal of Hydrodynamics,Ser. B, 2004, 16(3): 283-289.
11 ZHANG Qian-fei, WANG Yan-ming and XU Yong-fu.Seepage analysis of landfill foundations in Shanghai Laogang landfill phase IV[J]. Journal of Hydrodynamics, Ser. B, 2006, 18(5): 613-619.
12 CHEN Bing, CHENG Liang. Numerical investigation of three-dimensional flow and bed shear stress distribution around the span shoulder of pipeline [J]. Journal of Hydrodynamics, Ser. B, 2004, 16(6): 687-694.
13 XU Shi-liang. Common algorithmic program set with FORTRAN language [M]. Second Edition, Beijing:Tsinghua University Press, 1996 (in Chinese).
14 LUO Zu-jiang,WU Yong-xia. Three-dimension transient seepage numerical simulation of deep foundation pit dewatering in quaternary loose sediment layer [J].Journal of Shenyang Jianzhu University (Natural Science Edition), 2006, 22(2):181-185. (in Chinese)源`自*751~文·论^文`网[www.751com.cn
15 LUO Zu-jiang, ZHANG Yue-ping and LIU Jin-bao.Three-dimensional seepage numerical Simulation of deep foundation pit dewatering in complicated quaternary loose sediments with great thickness − A case study of dewatering reconstructed foundation pit at Dongjiadu subway the 4th line in Shanghai[J]. Chinese Journal of Rock Mechanics and Engineering, 2007,26(suppl.1): 2927-2934(in Chinese). 三维有限元数值模拟深基坑防渗降水英文文献和中文翻译(4):http://www.751com.cn/fanyi/lunwen_54797.html